Violence continues to get worse on the border between the US and Mexico as drug cartels are becoming bolder. President-elect Barack Obama is planning to meet with Mexican President Felipe Calderon. So, what will the two leaders discuss? Peter DeShazo is Director of the CSIS Americas Program and Former Deputy Assistant Secretary of State for Western Hemisphere Affairs. He brings us analysis, as well as a brief history of the on-going problem. Click to hear the interview.